feat: added support Laravel 9

- Dropped Laravel 6 & 7 support

Merge pull request #18 from tanthammar/patch-1

Avoid problems with seeders and factories

Merge pull request #16 from jadamec/patch-1

PHP 8 support

Merge pull request #13 from siarheipashkevich/current-team-id

changed hardcoded current_team_id to getting this value from config file

Fixed problem with foreign column of team in users table

Update 2016_05_18_000000_teamwork_setup_tables.php

Added Laravel 8 support

Added uuid in teams table and corrected other things